22 neutrons, for its most stable isotope.
There are 18, 20 or 22 neutrons.
The number of neutrons in an argon atom is 22. This is calculated by subtracting the atomic number of argon (18) from its atomic mass number (40).
neutrons = 22 (for the most stable isotope of argon, Ar-40)
There are 3 Isotopes with the following mass numbers: Argon 36 Argon 38 Argon 40 Argon has an atomic number of 18 (it therefore has 18 protons in its nucleus and 18 electrons flying round it). To get the number of neutrons one subtracts the atomic number from the mass number. This means that some Argon atoms have 18 neutrons, some 20 neutrons and some 22 neutrons the isotope with 22 neutrons is the most common and forms 99.6% of all Argon.
Argon-38 is an isotope of argon with 21 neutrons. This can be calculated by subtracting the atomic number from the atomic mass number (38 - 17 = 21 neutrons).
Argon 38 has eighteen protons and twenty neutrons. Argon 36 has eighteen protons and eighteen neutrons.
It is the mass number, i.e., the total number of protons and neutrons in argon and is ofter used to calculate the number of neutrons present. As the atomic number (or the number of protons) for argon is 18, there will be 22 neutrons in Argon-40 isotope.
If you look at the periodic table, Argon's atomic mass is forty, and its atomic number is eighteen. So forty minus eighteen = 22 neutrons
An argon nucleus typically contains 18 protons and either 20 or 22 neutrons, depending on the isotope of argon. The most common isotope, argon-40, has 18 protons and 22 neutrons.
Argon has 18 electrons and protons...Neutrons is 22
The element Argon has 8 Isotopes argon-35, argon-36, argon-37, argon-38, argon-39, argon-40, argon-41 and argon-42.The stable isotopes of argon are:argon-36, 0.34%argon-38, 0.06%argon-40, 99.60%Of the radioactive isotopes argon-39 has the longest halflife at about 260 years, all the others have halflives measured in days or much less.
The element with 18 protons and 22 neutrons is argon. Argon has an atomic number of 18, which corresponds to the number of protons, and an atomic mass of 40 (approx.), which is the sum of protons and neutrons.